Q: What are the prime factors of the number 124,320,512?

 A: 2, 179, 2713

Why are those the prime factors of the number 124,320,512?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 124,320,512

124,320,512
Factor Arrows
262,160,256
Factor Arrows
231,080,128
Factor Arrows
215,540,064
Factor Arrows
27,770,032
Factor Arrows
23,885,016
Factor Arrows
21,942,508
Factor Arrows
2971,254
Factor Arrows
2485,627
Factor Arrows
1792,713

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 179, 2713

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 179 x 2,713 = 124,320,512

This can also be written as 28 x 1791 x 2,7131 = 124,320,512

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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